An interlayer film for laminated glass of the present invention is an interlayer film for laminated glass, the interlayer film having a structure of one or two or more layers, and comprising a first layer comprising a thermoplastic resin and a composite silica particle, in which the composite silica particle comprises a silica particle and an organic covering material with which a surface of the silica particle is covered, and a remaining fraction at dissolution in THF after still standing at 230° C. for 6 hours of the first layer is 15% by mass or less.